Automobile tires have similar issues with stated printed sizing from manufacturer to manufacturer and also sometimes within tire brand's various models.
Folks often see this when for example they fit larger and wider wheels on to vintage sporty cars. Their goal is to fit larger and wider wheels with low profile wide tread that improves traction and road handling. Often these persons want to completely fill the wheel well for just the right look. Often what happens when people try to push the envelope, they find out that certain brands' tire model offerings clear everything perfectly, and some will rub the inner fenders, even though these tires all have the same exact stated printed sizing on the tire sidewall, meaning that the wheel size, aspect ratio, tread width, and speed rating is the same classification. Most automobile tire manufacturer websites and national tire dealer websites have other comparative details such as inflated circumference in milimeters so people can have a better clue which might provide just enough clearance, more than say another of the same size. The only sure fire way to really know is to generally monitor the automotive forums for that particular marque of car and see what the general consensus might be on the that topic of tire size. Another important consideration is manufacturing tolerances and factory assembly on the vehicle in question. It is a serious factor. For example, your 1965 Mustang convertible, or 1966 Corvair convertible, or 1969 Camaro, or 1973 Porsche 911 might vary as much as 7mm or even 10mm from side to side, that you might not be able to be 100% certain that just because Lucas in Little Rock says that it fits but Bubba in Nashville says that it only fit after he rolled the fender lip outward with the old Boog Powell Louisville Slugger baseball bat. Spend just two or three minutes on any automobile website and you'll see that brand & tire size fittment is always a huge issue when trying to find the widest/largest tire that might fit without modification to the fender lip. I guess there is no wonder why bicycle tires are not any more exactly interchangeable.
One thing is certain though, both bicycle tires and automobile tires are significantly better today in 2020 than they were in 1980.